A−
Jefferson Jr High School
PublicMiddleGrades 6–8
1525 N Loomis St, Naperville, IL 60563 · (630) 420-6363 · Part of Naperville Community Unit District 203
Students
832
Students per teacher
12:1
Free or reduced lunch
29%
Setting
City
Grades
6–8
What stands out about Jefferson Jr High School
- School Grade A−: near the top of Illinois’s public schools
- Math proficiency 10 pts above the state
- Reading / language arts 12 pts above the state
- Small classes: 12:1 students per teacher
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency36%
State average 25.9%
Reading / language arts43%
State average 30.7%
Location
Directions ↗
1525 N Loomis St, Naperville
Students
Enrollment by grade
Grade 6258
Grade 7313
Grade 8261
Enrollment over time
810’20
828’21
817’22
849’23
832’24
About steady.
Who goes here
White 47%Hispanic 25%Asian 16%Black 7%Two or more races 5%American Indian/Alaska Native <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
No ratings yet. Be the first neighbor to rate it.
Parents talk
Conversations in Town Square that mention Jefferson Jr High School.
Other schools in Naperville Community Unit District 203
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.